Shears.



RH. MBLANDER..

sHBARs. APPLIOATION'FILBD JULY.28, 1908.

906,255.. Patented Dec. 8,'1908.

Faev ELU/@Um er Q. @ggf PETER MELANDER, OF TACOMA, WASHINGTON.

SHE ARS.

Specification of Letters Patent.

Patented Dec. 8, 1908.

Application filed July 28, 1908. Serial No. 445,746.

To all whom it may concern:

Be it known that I, PETER H. MELANDER, a citizen ofthe United States,residing at Tacoma, in the county of Pierce and State of Vashington,have invented certain new and useful Improvements in Shears; and I dohereby declare the following to be a full, clear, and exact descriptionof the invention, such as will enable others skilled in the art to whichit appertains to make and use the same, reference being had to theaccompanying drawings, and to the letters and figures of referencemarked thereon, which form a part of this specification.

This invention relates to new and useful improvements in shears andcomprises various details ot construction, combinations and arrangementsof parts which will be hereinafter fully described and then specificallydei'ined in the appended claims.

I illustrate my invention in the accompanying drawings, in Which2 Figurel is a side elevation of my improved shears. Fig. 2 is a view of thereverse side. Fig. 3 is a cross sectional view on line 3 3 of Fig. l.Fig. 4 is a section through the pivot, boss and anti-friction roller,and Fig. 5 is an enlarged detail view of the anti-friction roller.

Reference now being had to the details of the drawings by letter, A andB designate the two blades of the shears, the former of which has athreaded aperture for the reception of a screw D, and the plate B isprovided with an elongated slot E with a shoulder E formed in themarginal edge of the opening adapted to receive a sliding boss F havingan elongated lange F which is adapted to rest upon said shoulder. Saidboss receives the screw D and the head of the screw is slightlycountersunken in said boss, as shown clearly in Figs.' 3 and 4 of thedrawings. -An antifriction roller, designated by letter II, is mountedabout said boss upon which it has a bearing and is interposed betweenthe marginal walls of the slot E. A link K is pivotally connected at oneend to a screw O fastened to the blade A and its other end is fastenedto a screw R carried by the blade B.

By the construction shown, it will be noted that, when the blades areopened and closed, a shearing cut as well as a longitudinal draw cut ofthe edges is effected, the link K causing one of the blades to be movedlongitudinally as they shear. During this movement, the anti-frictionroller will bear against the op posite walls of the elongated slot E andreduce the friction to a minimum.

It will be understood that, while I have shown my invention as appliedto pivotal cutting shears of a certain kind, the principle involved ingiving a draw cut may be applied to any form of shearing apparatus andmay be of any shape and design.

What I claim to be new is Shears comprising two blades, a pivotal screwmounted in a threaded aperturein one of said blades, the other bladeprovided with an elongated slot having a shoulder in the marginal edgethereof, a boss F having an' elongated iange, the opposite edges ofwhich are parallel and adapted to rest and slide upon said shoulder, theends of said fla-nge being conveXed and adapted to contact with theconcaved ends ofthe opening in theblade to limit the movement of one ofthe blades in opposite directions, ,an anti-friction roller mounted uponsaid boss and its upper end flush with the shoulder in said opening andits lower end adapted to rest upon the inner face of the pivot carryingblade, and a link pivotally connecting the handles of the two blades, asshown yand described.

In testimony whereof I hereunto affix my signature in the presence oftwo witnesses.

PIETER H. MELANDER.

Witnesses EDWARD Foce, JESSE THOMAS.

